Kilgore is the founder of Soap & Glory, a makeup and skin-care line, and a frequent international traveler.

I see pictures of celebrities after a flight and think, Did she spend three hours getting ready to get off? You want to look effortless, like a woman of the world.

• Refresh your skin. The most important thing you can do is moisturize. Moisture reflects light, so you don't see imperfections as much. Right before I get on a plane, I dampen my face and then put on a rich cream like Soap & Glory's Make Yourself Youthful. Over that, I'll smooth just a dab of Vaseline. People think it'll cause breakouts, but it stays on the surface and acts as a barrier that keeps moisture from escaping.

• Choose wisely. I wear makeup on the plane, but I focus on skin, lips, and cheeks. Eye makeup can smear and flake. I wear foundation but no powder, because it can be drying. Bobbi Brown has a creamy blush stick that I put on the apples of my cheeks to look alive. And then I add a matte lipstick with gloss on top.

• Finish right. Before we land, I brush my hair until it's shiny; bedhead makes you look exhausted. I apply some concealer under my eyes, touch up my blush and lipstick, and get out of that horribly lit bathroom as fast as possible. Then I wear sunglasses—instant camouflage.